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38 lines
713 B
Go
38 lines
713 B
Go
//go:build windows
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// +build windows
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package routemanager
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import (
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"net"
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"net/netip"
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"github.com/yusufpapurcu/wmi"
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)
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type Win32_IP4RouteTable struct {
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Destination string
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Mask string
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}
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func existsInRouteTable(prefix netip.Prefix) (bool, error) {
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var routes []Win32_IP4RouteTable
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query := "SELECT Destination, Mask FROM Win32_IP4RouteTable"
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err := wmi.Query(query, &routes)
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if err != nil {
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return true, err
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}
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for _, route := range routes {
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ip := net.ParseIP(route.Mask)
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ip = ip.To4()
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mask := net.IPv4Mask(ip[0], ip[1], ip[2], ip[3])
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cidr, _ := mask.Size()
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if route.Destination == prefix.Addr().String() && cidr == prefix.Bits() {
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return true, nil
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}
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}
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return false, nil
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}
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